What's the story behind the name "Iron Danger"?

[J.P.]

As a Finn, I see a direct translation of a Finnish municipality of Rautavaara.
The word 'vaara' can mean 'danger', but it's also a name of a certain type of hill, like in the name of the aforementioned municipality.

[Amiga Boy]

Yes you are not wrong. It is a direct tarnslation.